摘要
传统无动力垂直潜流人工湿地,由于内部溶解氧的不足,存在除污能力下降、填料堵塞等问题。本研究采用预曝气的人工增氧方式,设计预曝气+垂直潜流人工湿地模式,以厌氧池+微曝气生物接触池+两级复合垂直流人工湿地的组合工艺,建设晋城市巴公镇农村生活污水治理项目中试端和应用示范端,探讨了实际工程应用对农村生活污水的治理效果,以及预曝气对复合垂直流人工湿地的影响。结果表明,经过8个月的运行,应用示范端出水中TN、NH_(4)^(+)-N和COD值均满足设计出水水质要求,平均去除率分别为88.3%、93.7%和77.4%,且抗冲击能力较强、不易受冬季低温影响;对TP的去除效果较不稳定,对比中试端对TP的平均去除率94.3%,应用示范端对TP的平均去除率仅为17%;预曝气的人工增氧方式,使得系统中一级复合垂直流人工湿地对污水中TN、NH_(4)^(+)-N、TP和COD的平均去除率分别提高了14.9%、6.8%、4.6%和10.1%。
Due to the lack of dissolved oxygen in it,the traditional unpowered vertical subsurface flow constructed wetland has problems such as decrease of decontamination ability and the blockage of fillers.In this study,the pre-aeration of artificial aeration was used to design the pre-aeration-vertical subsurface flow constructed wetland mode.The combined process of anaerobic tank-micro-aeration biological contact tank-two-stage integrated vertical flow constructed wetland was used to construct the pilot and application demonstration of the rural domestic sewage treatment project in Bagong Town,Jincheng City.The effect of practical engineering application on the treatment of rural domestic sewage and the effect of pre-aeration on the integrated vertical flow constructed wetland were discussed.The results showed that,after 8 months of operation,the effluent TN,NH_(4)^(+)-N and COD values of the application demonstration could meet the design effluent quality requirements,the average removal rates were 88.3%,93.7%and 77.4%,respectively,and the process had strong impact resistance and not easily affected by low temperature in winter.TP removal in application demonstration was unstable,and the average removal rate was only 17%,while the average removal rate in pilot demonstration was 94.3%.Due to the pre-aeration,the average removal rates of TN,NH_(4)^(+)-N,TP and COD in the first-stage integrated vertical flow constructed wetland increased by 14.9%,6.8%,4.6%and 10.1%,respectively.
作者
张儆醒
黄锦楼
姜姗
李静
ZHANG Jingxing;HUANG Jinlou;JIANG Shan;LI Jing(State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;College of Resources and Environment,University of Chinese Academy of Sciences,Beijing 100049,China;CAS-OASIS Ecological Engineering Technology Co.Ltd.,Beijing 100096,China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2024年第3期747-757,共11页
Chinese Journal of Environmental Engineering
基金
晋城市高平市农村生活污水处置与资源化利用项目(20210682)
晋城市沁水县农村生活污水处置与资源化利用项目(20210614)。
关键词
预曝气
垂直潜流人工湿地
运行效果
pre-aeration
vertical subsurface flow constructed wetland
operation effect
